#------------------------------------------------- WARNING -------------------------------------------- # # The data you have obtained from this automated Natural Resources Conservation Service # database are subject to revision regardless of indicated Quality Assurance level. # Data are released on condition that neither the NRCS nor the United States Government # may be held liable for any damages resulting from its use. # # SNOTEL air temperature data contains a known bias. This bias is rooted in the sensor # conversion equation and varies through the output range. Solutions are in development. # For more information go to Air Temperature Bias Correction. # # Help and Tutorials: https://www.nrcs.usda.gov/sites/default/files/2023-03/Report%20Generator%20Help%20Guide.pdf # Air Temperature Bias Correction: https://www.nrcs.usda.gov/wps/portal/wcc/home/snowClimateMonitoring/temperature/temperatureBiasCorrection/ # # Support Contact: usdafpacbc@servicenowservices.com # #------------------------------------------------------------------------------------------------------ # # Reporting Frequency: Daily # Date Range: 1990-10-01 to 1991-09-30 # Report Instantaneous Data As: Start of Day # # Data for the following site(s) are contained in this file: # # SNOTEL 603: Lower Twin, MT # # Data items provided in this file: # # Element Name Value Type Function Type Function Duration Base Data Measurement Units Sensor Depth Element Code Description # Precipitation Accumulation Median (1991-2020) None Instantaneous - Start of Day N/A Inches N/A PREC Water year accumulated precipitation # # Quality Control flags included: # # Flag Name Description # V Valid Validated Data # N No Profile No profile for automated validation # E Edit Edit, minor adjustment for sensor noise # B Back Estimate Regression-based estimate for homogenizing collocated Snow Course and Snow Pillow data sets # K Estimate Estimate # X External Estimate External estimate # S Suspect Suspect data # # Quality Assurance flags included: # # Flag Name Description # U Unknown Unknown # R Raw No Human Review # P Provisional Preliminary Human Review # A Approved Processing and Final Review Completed # #------------------------------------------------------------------------------------------------------ # # Lower Twin (603) # Montana SNOTEL Site - 7900 ft # Reporting Frequency: Daily; Date Range: 1990-10-01 to 1991-09-30 # # As of: May 11, 2024, 6:18:48 AM GMT-08:00 # Day,Oct,Nov,Dec,Jan,Feb,Mar,Apr,May,Jun,Jul,Aug,Sep ,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values,Median Precipitation Accumulation (1991-2020) (in) Start of Month Values 01,0.0,3.2,6.5,10.6,13.1,16.3,19.6,24.0,30.1,34.1,36.2,37.2 02,0.0,3.3,6.6,10.6,13.2,16.4,19.8,24.4,30.4,34.1,36.2,37.4 03,0.1,3.4,6.6,10.6,13.3,16.5,19.8,24.8,30.5,34.3,36.3,37.4 04,0.1,3.4,7.0,10.6,13.4,16.8,19.8,25.1,30.6,34.4,36.3,37.5 05,0.4,3.6,7.2,10.8,13.8,16.8,19.9,25.2,30.6,34.4,36.3,37.5 06,0.4,3.6,7.2,10.8,13.9,17.0,20.2,25.2,30.8,34.4,36.4,37.6 07,0.5,3.8,7.2,11.0,14.0,17.1,20.2,25.5,30.8,34.4,36.4,37.8 08,0.6,3.8,7.4,11.2,14.2,17.2,20.3,25.7,30.9,34.4,36.4,37.9 09,0.6,4.0,7.4,11.3,14.3,17.4,20.4,25.8,31.2,34.6,36.4,38.0 10,0.7,4.0,7.4,11.4,14.4,17.5,21.0,26.2,31.4,34.8,36.4,38.0 11,0.7,4.1,7.6,11.4,14.4,17.6,21.0,26.4,31.8,34.9,36.4,38.0 12,1.3,4.3,7.6,11.4,14.6,17.7,21.0,26.9,32.0,35.0,36.4,38.0 13,1.3,4.5,7.6,11.5,14.6,17.7,21.2,27.2,32.3,35.0,36.4,38.0 14,1.3,4.5,8.0,11.6,14.7,17.8,21.3,27.4,32.3,35.0,36.4,38.0 15,1.3,4.6,8.2,11.6,14.8,17.9,21.4,27.5,32.4,35.1,36.4,38.0 16,1.4,4.6,8.2,11.7,14.8,18.0,21.7,27.7,32.4,35.1,36.4,38.0 17,1.6,4.8,8.4,11.9,15.1,18.1,21.8,27.7,32.5,35.1,36.4,38.2 18,1.6,4.8,8.4,12.0,15.2,18.2,21.8,27.8,32.7,35.1,36.6,38.2 19,1.7,5.2,8.4,12.1,15.3,18.2,22.4,27.9,32.9,35.1,36.6,38.2 20,1.9,5.4,8.6,12.2,15.4,18.2,22.6,28.0,33.0,35.2,36.6,38.2 21,2.0,5.6,8.6,12.4,15.4,18.4,22.6,28.2,33.1,35.3,36.6,38.4 22,2.2,5.7,8.8,12.4,15.4,18.4,22.7,28.3,33.2,35.4,36.6,38.6 23,2.2,5.7,9.0,12.5,15.6,18.5,22.9,28.6,33.2,35.4,36.7,38.6 24,2.2,5.8,9.1,12.6,15.6,18.6,23.0,28.6,33.2,35.6,36.7,38.8 25,2.4,6.0,9.2,12.7,15.6,18.6,23.1,28.6,33.3,35.7,36.7,38.8 26,2.8,6.0,9.4,12.8,16.0,18.6,23.2,28.6,33.6,35.7,37.0,39.2 27,2.8,6.1,9.6,12.9,16.0,18.9,23.4,29.0,33.7,35.7,37.0,39.2 28,2.8,6.2,9.6,13.0,16.0,19.1,23.4,29.1,33.7,35.7,37.2,39.2 29,2.9,6.3,10.0,13.1,,19.3,23.5,29.6,33.7,35.8,37.2,39.2 30,3.0,6.4,10.4,13.1,,19.3,23.6,29.6,33.7,35.8,37.2,39.2 31,3.0,,10.4,13.1,,19.4,,29.8,,35.8,37.2,